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The lateral tibial tunnel: does it allow for adequate fixation in ACL surgery?
Hans Van Der Bracht1, Garth Cloete, Benedict Page
1Dept Orthopaedic Surgery, UZ, Gent, Belgium. info@vanderbracht.com
Unlabelled:
The purpose of this cadaver study about the ACL graft was to compare a "Lateral Tibial Tunnel" (LTT) and a "classic, anteroMedial Tibial Tunnel" (MTT), as to fixation strength and mode of failure. Ten pairs of fresh frozen human proximal tibias were used. In one of both tibias a classic anteromedial tunnel was used, versus a lateral tibial tunnel in the contralateral knee. Autologous doubled semitendinosus and gracilis tendons were fixed in the tunnels. A maximum load to failure test was performed to determine the stiffness and the strength of the graft-tibia complex.
Conclusion:
for none of the measurements was there any significant difference between both tunnels. The tibial fixation strength of a human autologous doubled hamstring graft in ACL surgery is similar, whether a lateral or an anteromedial tibial tunnel is used. This is the first study investigating fixation strength of an ACL graft in a lateral tibial tunnel.
